Summary statistics for d_4_hos_c2_41 variable in hosp_rollup2552_96_2007 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos~2_41 | 331 527819.2 1815692 27 2.98e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018